Due to international treaty the moon is considered international land, like Antarctica.

You think some other country would have objected to the US not requesting cusoms declarations from their own citizens, reasoning it breaks the treaty obligations?

	▲	jedberg 3 days ago \| parent [-]
		I think it was more about the US insisting the rules get followed no matter what. Sort of like how astronauts today going to ISS have to fill out international travel forms, even when they leave from the USA.